Newport PHAMP-1 Operator's Manual

PHAMP-1
pH Preamplifier
General Description
The PHAMP-1 is a unity gain
preamplifier which convert the high
impedance mV signal of a pH or ORP
electrode to a low impedance signal
which can travel 1,000 feet over
ordinary wire and connectors not only
to pH meters and controllers (such as
the INFCPH) which are designed with
high impedance input circuitry, but also
to Process Meters and controllers such
as the IDP and INFP which can not
otherwise register the high impedance
signal.
In many applications the PHAMP-1
Preamp will also extend the useful life
of expensive pH electrodes, lowering
the output impedance of an aging
electrode allowing it to continue
providing a measurable signal.
The PHAMP-1 is powered by lithium
batteries with an estimated life of 5
years when used with high input
impedance instruments.
The electrodes are entirely
encapsulated in an epoxy filled
stainless steel enclosure. The input
and output connections are industry
standard BNC. The output can be split
from coaxial to separated leads with a
BNC to the Banana plug adapter
(part number 3073/N).
1
2
Operating Instructions
1. Plug it in.
INPUT
from Electrode
Specifications
Output Offset:
Input Impedance:
Output Impedance:
Output Voltage:
Operating
Temperature:
Dimensions:
Weight:
PHAMP-1
pH Preamplifier
PHAMP-1
OUTPUT
to Meter
1 mV typical; 2 mV max.
which corresponds to .033 pH
10 13 Ohms
20 K Ohms
-2000 mV to +2000 mV
0 to 60¡C
95.25 cm L x 17.8 cm D
(3.75Ó x 0.7Ó)
5.7 g (2 oz.)